The Effect of Inhaled Pu239O2 on the Life Span of Mice

Abstract

Approximately 800 mice, divided into four age groups varying from 122 to 369 days, were given single exposures to P U~~~O , aerosols. Each age group was separated into a control and five subgroups, containing different amounts (0.038-0.72 nc) of Pu239 in the lung. The mean age at time of death wits established for each subgroup. Comparison of P~~3~-exposed mice with controls indicated no significant shortening of life span. No malignant tumors were seen.